Effects of liquid nicotine concentration and flavour on the acceptability of electronic nicotine delivery systems (ENDS) among people who smoke participating in a randomised controlled trial to reduce cigarette consumption Tobacco Full article: Nicotine intoxication by e cigarette liquids: a study of case reports and pathophysiology Recently, there's been some confusion on the amount of nicotine in e liquids. The problem comes from the difference between freebase nicotine and nicotine salts. Freebase nicotine is the purest form of nicotine. E liquides Roykin : Dcouvrez une Gamme de Saveurs Exquises Nicotine Strength Comparison: Your Complete Guide to E liquid Concentrations SMOKO E Cigarettes